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Abstract ▼ AI-Helper

A 5200 basepair DNA fragment containing the Bacillus amyloliquefaciens amyE gene, encoding liquefying $\alpha$-amylase (1,4-$\alpha$-1)-glucan glucanohydrolase, EC 3.2.1.1), has been inserted into BamHI site of the pUB110 and the hybrid plasmid was designated as pSKS3. The pSKS...

A 5200 basepair DNA fragment containing the Bacillus amyloliquefaciens amyE gene, encoding liquefying $\alpha$-amylase (1,4-$\alpha$-1)-glucan glucanohydrolase, EC 3.2.1.1), has been inserted into BamHI site of the pUB110 and the hybrid plasmid was designated as pSKS3. The pSKS3 was transformed into the Bacillus subtilis KM2l3 as a host which is a saccharifying $\alpha$-amylase deficient mutant of Bacillus subtilis NA64, and the plasmid in the transformed cell was expressed $\alpha$-amylase production and kanamycin resistance. The $\alpha$-amylase production of the transformed cell was reduced to one fifth of that of the donor strain. The Bacillus subtilis KM2l3 tarring pSKS3 indicated that the amyE gene product is a polypeptide which has the same electrophoretic mobility with that of the Bacillus amyloliquefaciens, but different from the saccharifying $\alpha$-amylase of Bacillus subtilis NA64. It means that the amyE gene of pSKS3 originales from the Bacillus amyloliquefaciens.

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